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Global Volcanism Program | Image GVP-03151

The Big Obsidian Flow lava flow in the foreground covers about 20 sq km of the floor of Newberry caldera and was emplaced about 1300 years ago during the last eruption of the volcano.  The eruption began from a vent at the base of the south caldera wall, out of view to the right.   Photo by Lee Siebert, 1984 (Smithsonian Institution).

The Big Obsidian Flow lava flow in the foreground covers about 20 sq km of the floor of Newberry caldera and was emplaced about 1300 years ago during the last eruption of the volcano. The eruption began from a vent at the base of the south caldera wall, out of view to the right.

Photo by Lee Siebert, 1984 (Smithsonian Institution).


Newberry